Improvement in burglar-alarms



G. s. (ELEMENTS. Burglar-Alarm.

No. 197,334. Patented Nov. 20,1877.

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UNITED STATES PATENT CFFICE.

GEORGE S. GLEMENTS, OF NEW LEXINGTON, OHIO, ASSIGNOR OF ONE-HALF HISRIGHT TO JOEL G. DECKER, OF SAME PLACE.

IM PROVEMENT IN BU RGLAR-ALARMS.

Specification forming of Letters Patent No. 197,334, dated November 20,1877; application filed October 27, 1877.

To all whom it may concern: v

Be it known that I, GEORGE S. OLEMIENTS, of New Lexington, in the countyof Perry and State of Ohio, have invented a new and valuable Improvementin Burglar-Alarm and Sash and Door Fastener combined; and I do herebydeclare that the following is a full, clear, and exact description oftheconstruction and operation of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon.

Figure 1 of the drawings is a view of my combined burglar-alarm and sashand door fastener as applied to a door. Fig. 2 is a longitudinalvertical sectional view; Fig. 3 is a perspective view of the box, andFig. 4. is a perspective view of the bolt.

The nature of my invention consists in the construction and arrangementof a combined burglar-alarm and door or sash fastener, as will behereinafter more fully set forth.

The annexed drawing, to which reference is made, fully illustrates myinvention.

A represents the box or case of my device, provided at its ends withprojecting ears or flanges a a, through which screws are to pass forfastening the case to a door or sash.

On a pin, b, within the case is pivoted a hammer, B, the body of whichlies in a slotin the case, and has its upper end projecting beyond thebody of the case. In this end of the hammer is formed a tube orreceiver, d, for the insertion of a cartridge, which is to strike aprojection or knife, 6, on the end of the case and thus be exploded.

0 represents a wire spring, coiled as shown, said coil being placedaround a pin or rivet, f, in the case, as shown. One end of the spring.bears against the inside of the case A, while the other end forms ahook, h, which is placed in a seat or recess, '0 formed in the inner endof the hammer above the pivot. Below said pivot the inner end of thehammer forms a projection, m, as shown.

D represents the bolt, placed in the case below and at right angles tothe hammer B. The outer end of the boltD is made wedge-shaped, taperinginward, as shown; and to the bolt is attached a flat spring, D, to holdthe bolt in place and form a trigger. On' the body of the bolt D isformed a notch, n, and inclined projection, p.

The case A being applied to a door, the bolt is pushed outward to enteran ordinary keeper, G. The hammer B can now be pulled outward, theprojection on thereon riding over the incline p until it becomes caughtor locked in the notch n. If an attempt is now made to push the dooropen, the bolt D, on account of its tapering form and by the action ofthe spring D, will yield to the pressure and release the hammer, whichlatter is then thrown down by the spring 0, so as to explode thecartridge and thus give the alarm. This device may be applied to windowsas well as to doors.

It will be noticed that when the bolt is pushed back the hammer cannotbe raised and set. It is only when the bolt has been pushed outward andthe door or sash bolted that the hammer can be raised, and hence nomistake can occur.

What I claim as new, and desire to secure by Letters Patent, is

1. The hammer B, provided with the tube or receiver 01, recess 1', andprojection m, in combination with the spring 0, case A, and bolt D,substantially as and for the purposes set forth.

2.. The tapering bolt D, provided with the notch n and incline p, andthe spring D, in combination with the case and hammer, substantially asand for the purposes set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

GEORGE S. GLEMENTS.

Witnesses:

J. O. DECKER, J. J. LANE.

